Since I havent watched heathers but HAVE listened to the musical songs, I'm gonna attempt to summarise it with ONLY the knowledge of the songs, first day of senior year, veronica is writing in her diary and we meet some of the people, the heathers are in the bathroom "helping" Heather duke as she is throwing up, they get caught by a teacher who gives them detention but then veronica comes in and says they're all out on a hall pass, as to which the teacher approves, the heathers upon finding out who veronica is, say that she could be beautiful and therefore join them, which she does, she's at a gas station or something- I haven't listened to the song where she meets JD since I haven't been able to find it but- she meets JD and gets a crush on him or something idk, later veronica is trying to get away from two guys who are being suggestive to her?? Afterwards the heathers are trying to get veronica to stop being friends with someone, to which she doesn't and they threaten death on her or something? Idk I'm going off the lyrics- veronica doesn't know what to do for the time she's alive, eventually settling on having sex with JD for the whole time, which he agrees and they do that, on Monday when veronica SHOULD be dead she is spared?? She then afterwards ingore JD and then he gets into her house and says that they should blow up the school and that they were meant to be together, upon this veronica fakes her death by making it seem like she took her own life, when veronica does get back she says that JD's idea was a lie and she only deserves to die with what she created, after that something happens to Heather Chandler (I think she choked in a way) and Heather duke takes her place and says that she'll "never shut up again" and that's all I know from the songs so uh- yea idk how it ends though